Description
Feathersjs is a framework for creating web APIs and real-time applications with TypeScript or JavaScript. Versions 5.0.39 and below the redirect query parameter is appended to the base origin without validation, allowing attackers to steal access tokens via URL authority injection. This leads to full account takeover, as the attacker obtains the victim's access token and can impersonate them. The application constructs the final redirect URL by concatenating the base origin with the user-supplied redirect parameter. This is exploitable when the origins array is configured and origin values do not end with /. An attacker can supply @attacker.com as the redirect value results in https://[email protected]#access_token=..., where the browser interprets attacker.com as the host, leading to full account takeover. This issue has been fixed in version 5.0.40.
INFO
Published Date :
2026-02-21T03:23:28.340Z
Last Modified :
2026-02-25T21:24:54.980Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-27191 vulnerability.
| Vendors | Products |
|---|---|
| Feathersjs |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27191.
